You'll need to be patient. You can't always win.
Values of Poker Hands:
Straight Flush: 5 cards in a row, all of the same suit.
4 of a kind: 4 of the 5 cards are the same
Full House: 3 of a kind plus a pair
Flush: All 5 cards are the same suit.
Straight: Five cards in a row numerically.
3 of kind: 3 cards the same
2 pair: 2 pair + a single
1 pair: 1 pair + 3 singles
Rules: You can try to make a combination by changing your cards only once. You can change up to 3 cards; 4 cards if you were dealt an ace. The point applet adjusts after you exchange.